Is it useful to freeze the account after investigation and find a lawyer?

If the party whose bank account has been frozen is unwilling to file with the public security organ, he has the right to entrust a lawyer to unfreeze the bank account. Even if the bank account cannot be unfrozen in the investigation stage of the public security organ, as long as it is proved that the funds are legally obtained and have nothing to do with the case investigated by the public security organ, the public security organ can be required to unfreeze the bank account after the criminal case is heard.

Legal basis: relevant provisions on seizure, seizure and freezing of property in civil execution of the court Article 29 The time limit for the people's court to freeze the bank deposits and other funds of the person subjected to execution shall not exceed six months, the time limit for seizure and seizure of movable property shall not exceed one year, and the time limit for seizure and freezing of real estate and other property rights shall not exceed two years. Except as otherwise provided by laws and judicial interpretations. If the person subjected to execution applies for an extension of the time limit, the people's court shall go through the formalities of sealing up, distraining and freezing before the expiration of the time limit for sealing up, distraining and freezing, and the extension period shall not exceed half of the time limit specified in the preceding paragraph.